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(: Test: K-SeqIndexOfFunc-18                             :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:22+01:00                       :)
(: Purpose: A test whose essence is: `deep-equal(index-of((1, 2, "three", 5, 5, 6), 5), (4, 5))`. :)
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deep-equal(index-of((1, 2, "three", 5, 5, 6), 5), (4, 5))